Engineering Mechanics - DynamicsChapter 13Problem 13-1Determine the gravitational attraction between two spheres which are just touching eachother. Each sphere has a mass Mand radius r.Given:r200 mm=M10 kg=G66.731012−×m3kg s2⋅=nN1109−×N=Solution:FGM22r()2=F41.7 nN=Problem 13-2By using an inclined plane to retard the motion of a falling object, and thus make the observationsmore accurate, Galileo was able to determine experimentally that the distance through which anobject moves in free fall is proportional to the square of the time for travel. Show that this is the
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